Help identify hitchhiker on live rock

[Stacyod]

My neon dotty back grabbed a piece of scallop early this morning. I found this critter eating it later in the day. I think the dotty back fed it. LFS says it’s aitapsia but it doesn’t look like the photos on line. The fire shrimp came over and stole the scallop piece away without any apparent harm. Opinions please before I use aitapsia x.

 

[redfishbluefish]

A picture would be nice. :D

 

[Stacyod]

 

[Stacyod]

I’m sorry the original picture didn’t post. The dotty back sleeps inside this rock. Every morning she grabs a morsel of food and speeds off towards the backside of this rock then reappears to eat more. Yesterday I spotted this guy and one other near the back entrance to her den (It has three entrances). He was munching on the piece of scallop she had snagged earlier.

 

[Sierra_Bravo]

It appears to be a type of anenome that is often found on Florida Gulf live rock, like those from Tampa Bay Saltwater. TBS lists it as a curly cue anenome on their organisms page. https://www.tbsaltwater.com/thepackage/organisms.html If so, they do not spread like aiptasia but they will grow. I had two in my rock and they lived for quite a while. I eventually killed one with aiptasia X because it was in an area I wanted to put an acro. The other just disappeared.

 

[Stacyod]

Will Aiptasia x killl it?

 

[HumuhumuFan]

I vote aiptasia.